[Guy Harris <gharris@xxxxxxxxx>]

Michael G. Soulakis wrote:
> Can someone tell me how to select the loopback interface for packet 
> capture on Solaris.

Step 1: wait for the Solaris source to appear on opensolaris.org.

Step 2: download Solaris source.

Step 3: modify Solaris source so that the loopback device is implemented
by a DLPI driver.

Step 4. build, test, and debug resulting Solaris source.

Step 5. use tcpdump/snoop/Ethereal/etc. on resulting Solaris system.

Or, to put it another way, that's an intrinsic limitation of the way
Solaris's network stack works; it's not something a user can work
around, or even something that Ethereal or libpcap can be changed to fix.

> (does not exist in /dev/lo)
> lo0 shows up in the interface list,

Which interface list?  The one you get from "ifconfig -a", or the one
you get from Ethereal?  If it shows up in the one you get from Ethereal,
that's a bug - it should only show up on OSes that support capturing
traffic on the loopback device (Linux, various BSDs, Digital UNIX,
*possibly* AIX, and perhaps a couple of other ones).